Year	Number
2004-01-01	4888
2005-01-01	4960
2006-01-01	5147
2007-01-01	5264
2008-01-01	5361
2009-01-01	5422
2010-01-01	5432
2011-01-01	5440
2012-01-01	5632
2013-01-01	5582
2014-01-01	5483
2015-01-01	5480
2016-01-01	5357